KNPersistentState.m   [plain text]

/*
* Copyright (c) 2013-2014 Apple Inc. All Rights Reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/

#import "KNPersistentState.h"
#import <utilities/debugging.h>

@implementation KNPersistentState

-(NSURL*)urlForStorage
{
return [NSURL URLWithString:@"Preferences/com.apple.security.KCN.plist" relativeToURL:[[NSFileManager defaultManager] URLForDirectory:NSLibraryDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:YES error:nil]];
}

+(instancetype)loadFromStorage
{
KNPersistentState *state = [KNPersistentState new];
if (!state) {
return state;
}

id plist = @{@"lastWritten": [NSDate distantPast]};

NSError *error = nil;
NSData *stateData = [NSData dataWithContentsOfURL:[state urlForStorage] options:0 error:&error];
if (!stateData) {
secdebug("kcn", "Can't read state data (p=%@, err=%@)", [state urlForStorage], error);
} else {
NSPropertyListFormat format;
plist = [NSPropertyListSerialization propertyListWithData:stateData options: NSPropertyListMutableContainersAndLeaves format:&format error:&error];

if (plist == nil) {
secdebug("kcn", "Can't deserialize %@, e=%@", stateData, error);
}
}

state.lastCircleStatus = plist[@"lastCircleStatus"] ? [plist[@"lastCircleStatus"] intValue] : kSOSCCCircleAbsent;
state.lastWritten = plist[@"lastWritten"];
state.pendingApplicationReminder = plist[@"pendingApplicationReminder"] ?: [NSDate distantFuture];
state.applicationDate = plist[@"applicationDate"] ?: [NSDate distantPast];
state.debugLeftReason = plist[@"debugLeftReason"];
state.pendingApplicationReminderInterval = plist[@"pendingApplicationReminderInterval"];
state.absentCircleWithNoReason = plist[@"absentCircleWithNoReason"] ? [plist[@"absentCircleWithNoReason"] intValue] : NO;

if (!state.pendingApplicationReminderInterval || [state.pendingApplicationReminderInterval doubleValue] <= 0) {
state.pendingApplicationReminderInterval = [NSNumber numberWithUnsignedInt: 24*60*60];
}

return state;
}

-(void)writeToStorage
{
NSMutableDictionary *plist = [@{@"lastCircleStatus" : [NSNumber numberWithInt:self.lastCircleStatus],
@"lastWritten" : [NSDate date],
@"applicationDate" : self.applicationDate,
@"pendingApplicationReminder" : self.pendingApplicationReminder,
@"pendingApplicationReminderInterval": self.pendingApplicationReminderInterval,
@"absentCircleWithNoReason" : [NSNumber numberWithBool:self.absentCircleWithNoReason],
} mutableCopy];
if (self.debugLeftReason)
plist[@"debugLeftReason"] = self.debugLeftReason;
secdebug("kcn", "writeToStorage plist=%@", plist);

NSError *error = nil;
NSData *stateData = [NSPropertyListSerialization dataWithPropertyList:plist format:NSPropertyListXMLFormat_v1_0 options:kCFPropertyListImmutable error:&error];
if (!stateData) {
secdebug("kcn", "Can't serialize %@: %@", plist, error);
return;
}
if (![stateData writeToURL:[self urlForStorage] options:NSDataWritingAtomic error:&error]) {
secdebug("kcn", "Can't write to %@, error=%@", [self urlForStorage], error);
}
}

@end